Prepare Cascara Sagrada Fluidextract as follows. To 1000 g of coarsely ground Cascara Sagrada add 3000 mL of boiling water, and allow to macerate in a suitable percolator for 2 h. Allow the percolation to proceed at a moderate rate, gradually adding boiling water until the drug is practically exhausted of its active principles. Evaporate the percolate on a water bath or in a vacuum still to NMT 800 mL. Cool, add 200 mL of alcohol and, if necessary, add sufficient water to make the product measure 1000 mL. Mix.